Lotus Root

Food · Vegetable · Food, Typed Supps

This crunchy root looks like plain starch but it's actually packed with vitamin C and potassium -- just make sure it's always cooked, never raw.

Stage by stage

Chewing (Mouth): Chewing breaks down lotus root's crisp fibrous structure, releasing its starch and mixing it with saliva.
Gastric Breakdown (Stomach): In the stomach, gastric acid and enzymes begin breaking down the root's starch and modest protein content before it moves onward.
Absorption (Small Intestine): The small intestine absorbs the released vitamin C, potassium, phosphorus, and folate, while most of its fiber travels on to the colon undigested.
Circulation & Use (Bloodstream): Circulating potassium supports blood vessel relaxation and heart rhythm, while vitamin C is used throughout the body for collagen formation and antioxidant defense.

Timing

Lotus root is eaten as a cooked vegetable within meals; there's no need to take it on an empty stomach or separately from food.

Time to effect

Days to Weeks: Fiber-related digestive benefits can show up within a day or two, while potassium's cardiovascular support builds with weeks of consistent intake.

Allergens

None of the fourteen major allergens. Derived from what this food is, not from a product label.

Eating patterns

Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Gluten-free. Depends on the product: Low-FODMAP.

Satiety

209 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.

Environmental footprint

0.5 kg CO2e and 108 litres of freshwater per kg, matched to "Other vegetables" in Poore & Nemecek (2018), Science 360.

Cost band

Cheap — roughly £2.5 per kg, as a band midpoint rather than a price.

Key nutrients

Vitamin C
Potassium
Dietary Fiber
Iron

Nutrition per 100g

Calories: 74
Protein: 2.6g
Carbohydrate: 17.2g
of which sugars: 0.4g
Fat: 0.1g
of which saturated: 0g
Fibre: 4.9g
Sodium: 45mg

Food vs. supplement

Lotus root delivers vitamin C, potassium, and fiber together in a low-fat, low-calorie package (about 74 kcal per 100 g), offering benefits like slow, fiber-buffered digestion that isolated supplements don't replicate.

Kitchen tip

Peel and thinly slice lotus root, soak briefly in acidulated water to prevent browning, and always cook it thoroughly by boiling, stir-frying, or braising -- raw aquatic rhizomes can carry parasite risk.

Common myth

"Lotus root is just crunchy starchy filler with barely any nutrients." In reality: Per 100 g raw, USDA data show lotus root provides 44 mg of vitamin C (about 49% DV), 556 mg of potassium (more than a banana's roughly 358 mg), and 4.9 g of fiber, all for about 74 calories.